Flanagan W. Michael
SEC insider (Form 3/4/5 filer). CIK 0001841990. Director at Atrium Therapeutics, Inc. (RNA) and 1 other issuer. 32 reported Form 4/5 transactions since Sep 2024; latest on Sep 18, 2026. Located in SAN DIEGO, CA.
Companies Flanagan W. Michael has filed insider reports for
- Atrium Therapeutics, Inc. (RNA): Director
- Avidity Biosciences, Inc. (RNAM): Officer, Chief Scientific Officer
Flanagan W. Michael
CIK: 0001841990
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (32 total)
- Sep 18, 2026RNA
Atrium Therapeutics, Inc.
Tax PaymentDirect22.8K shares at avg. $8.95$204K - Feb 27, 2026RNA
Atrium Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
20K shares- - Feb 27, 2026RNAM
Avidity Biosciences, Inc.
DispositionDirect150.4K shares- - Jan 21, 2026RNA
Avidity Biosciences, Inc.
SaleDirect4K shares at avg. $72.45$288K - Jan 21, 2026RNA
Avidity Biosciences, Inc.
SaleDirect2.6K shares at avg. $72.45$185K - Jan 7, 2026RNA
Avidity Biosciences, Inc.
SaleDirect2.4K shares at avg. $72.23$171K - Dec 17, 2025RNA
Avidity Biosciences, Inc.
Tax PaymentDirect13.7K shares at avg. $71.87$984K - Dec 17, 2025RNA
Avidity Biosciences, Inc.
AwardDirect27.5K shares- - Sep 11, 2025RNA
Avidity Biosciences, Inc.
SaleDirect20K shares at avg. $38.94$779K - Sep 11, 2025RNA
Avidity Biosciences, Inc.
ExerciseDirect20K shares at avg. $14.22$284K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 18, 2026 |  RNA Atrium Therapeutics, Inc. | Tax Payment | 22,812 | $8.95 | $204,167 | Direct |
| Feb 27, 2026 | RNA Atrium Therapeutics, Inc. | Award Stock Option (Right to Buy) | 20,000 | - | - | Direct |
| Feb 27, 2026 |  RNAM Avidity Biosciences, Inc. | Disposition | 150,365 | - | $0 | Direct |
| Jan 21, 2026 | RNA Avidity Biosciences, Inc. | Sale | 3,976 | $72.45 | $288,061 | Direct |
| Jan 21, 2026 | RNA Avidity Biosciences, Inc. | Sale | 2,558 | $72.45 | $185,327 | Direct |
| Jan 7, 2026 | RNA Avidity Biosciences, Inc. | Sale | 2,373 | $72.23 | $171,402 | Direct |
| Dec 17, 2025 | RNA Avidity Biosciences, Inc. | Tax Payment | 13,695 | $71.87 | $984,260 | Direct |
| Dec 17, 2025 | RNA Avidity Biosciences, Inc. | Award | 27,500 | - | - | Direct |
| Sep 11, 2025 | RNA Avidity Biosciences, Inc. | Sale | 20,000 | $38.94 | $778,702 | Direct |
| Sep 11, 2025 | RNA Avidity Biosciences, Inc. | Exercise | 20,000 | $14.22 | $284,400 | Direct |
1-10 of 32 transactions